What are the chemical or physical separation methods used to .This answer I wrote earlier today will explain how it's done once the gold is poured into doré at the mining site. answer to What is the chemical method used to.refining of the gold mineral,The Gold Smelting Process - Melting, Smelting & Refining .Jan 18, 2017 . Gold miners have to smelt their gold in order to remove impurities resulting in pure gold. Most large scale gold miners send their ore to smelters.
refining of the gold mineral